Also, .50 cal reinforces like a normal squad, for 35 mp per men, it doesn't have the 50% reinforce discount ANY OTHER SUPPORT WEAPON IN GAME FOR EVERY FACTION HAVE.
It does. The guys are valued at 70MP each because the .50 cal itself is set to 0MP value so the entire 280MP cost of the squad is made up by the 4 crewmembers.
Other fun things the .50 cal has:
Weapon priority value set wrong so it will get decrewed by PaKs and other antitank weapons very easily
focus_fire: true so it does a notable amount less DPS than other HMGs considering its other stats.
Vet2 removes all the aoe suppression and incremental accuracy changes HMGs were given
Gun has 10 armor instead of 70 so gets gun destroyed fast by mortars and nades (35 pen)
Worst long range penetration of any HMG in the game (1.0)
...To be on topic, I never understood why they halved the HMG34 damage per bullet. Should just revert that one change and be done with it.